The app he used was called centr

Looks like a great workout routine with a diet plan. 

It is great to see someone set a goal and stick to it for a long period of time and do the transformation. 

In the second video Chris Hemsworth puts out a good quote paraphrasing that 

Movement creates motivation

Basically move your body and you will have that transformation because you will have that motivation. 

Another take-away is the sticking to a workout to get it part of your habits.

GREAT GOAL: Find a fitness plan that works that fits into a great lifestyle and helps you create better habits for a healthier self.